tree-wide: rewrite ioutil functions to their replacements
The ioutil package has been deprecated in Go 1.16 [1]. This CL removes
all our own users of that package and rewrites them to use their
replacements in the os package. I initially wanted to do this with a
gofix but because all replacements were signature-compatible I just
did it with a few string replaces and then ran goimports to fix up the
imports.
I intentionally didn't rewrite the patches as that would require a
different process and is IMO of less value.
[1] https://github.com/golang/go/issues/42026
Change-Id: Iac6663a1f1ee49f9b1c6e4b3d97e73f2c3b54a13
Reviewed-on: https://review.monogon.dev/c/monogon/+/449
Reviewed-by: Sergiusz Bazanski <serge@monogon.tech>
diff --git a/metropolis/node/build/mkimage/osimage/osimage.go b/metropolis/node/build/mkimage/osimage/osimage.go
index 4ad2d5f..2f000a6 100644
--- a/metropolis/node/build/mkimage/osimage/osimage.go
+++ b/metropolis/node/build/mkimage/osimage/osimage.go
@@ -21,7 +21,6 @@
import (
"fmt"
"io"
- "io/ioutil"
"os"
diskfs "github.com/diskfs/go-diskfs"
@@ -58,7 +57,7 @@
// If this is streamed (e.g. using io.Copy) it exposes a bug in diskfs, so
// do it in one go.
// TODO(mateusz@monogon.tech): Investigate the bug.
- data, err := ioutil.ReadAll(src)
+ data, err := io.ReadAll(src)
if err != nil {
return fmt.Errorf("while reading %q: %w", src, err)
}